The couple plan to ring in 2009 with a January ceremony in the Los Angeles area, PEOPLE confirms
The pop star, 33, and the actor, 36, got engaged a little more than a year ago and were recently spotted checking out kitchen items at Crate and Barrel.
On the wedding guest list? Most of Fergie’s costars in Nine – the movie adaptation of the musical which Fergie (real name: Stacy Ferguson) just finished filming in Europe – including Kate Hudson and Nicole Kidman, according to Access Hollywood.
Duhamel, star of the box-office giant, Transformers and the NBC drama, Las Vegas, recently wrapped the romantic comedy, When In Rome with Kristen Bell, Jon Heder and Dax Shepard.